eckenrode



'(No Model.) I

' T. NESOM & W11). BGKENRODE.

EMBOSSING MACHINE.

Patented Sept. 22, 1896,

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l/VVE/VTORS z B y ATTORNEY.

WITNESSES.

OLlTHQ-WASNINGTON n c UNITED STATES ATENT OFFICE.

THOMAS NESOM AND IVIIILIAM D. EOKENRODE, OF INDIANAPOLIS, INDIANA.

EMBOSSING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 568,268, dated September 22, 1896.

Application filed October 30, 1895. Serial No. 567,390. (No model.)

To all whom it may concern.-

' Be it known that we, THOMAS NESOM and WILLIAM D. ECKENRODE, of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Embossing-Machines; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the aecompanyingdrawings, in which like numerals refer to like parts.

Our invention relates to an embossing-ma chine, and especially to the process of making the die, the form of the die, the means for adjustably mounting the same on the chuckhead, and means for heating the die while it is being used. Heretofore the die has been formed at considerable expense on a' solid body and heated through the hollow shaft on which the same is mounted, thereby making the construction of the embossing-machine expensive, requiring a separate head or body with each new die and a wasteful manner of heating the die.

The features of our invention will appear from the following description and the accompanying drawings.

Figure 1 is an elevation of our embossing machine, the shaft and drive-wheel being partly broken away. Fig. 2 is a longitudinal section of the same. Fig. 3 is a cross-section on the line A A of Fig. 1. Fig. 4 is a side elevation of one of the split rings used in mounting the die on the chuck-head. Fig. 5 is a plan View of a die before it is curved round the chuck-head. Fig. 6 is a side edge view of the same.

In making the curved die for our device we cast the same flat, as shown in Figs. 5 and 6, the design 2 being on one side and the other side being provided for its full length with a series of cross-corrugations 3. These may be wave-like, as shown, or as angular as desired. We then curve the die about a former that is the size of the head 4, as seen in Fig. 3. The

corrugations on the under side of the same prevent the die, whether it be raised or depressed, from cracking and otherwise becoming injured while the flat die is being bent about the former.

The chuck-head is mounted on the shaft 5, that carries a drive-wheel 6, and is split an nularly into two parts or ends, which We will call, respectively, the upperand lower ends. Each end is provided with an annular dovetail groove at '7 to receive the annular edge 8 of the die. Assuming the lower end of the chuck to be fixed in position, as shown, the die is slipped into position on it and the upper end of the chuck-head forced down against the die by a set nut 9. If the diebe wide, the chuck-head is lengthened by introducing into it split rings 10, with the hub 11 and spokes 12 to support the rim. A dovetail 13 and groove are provided in the adj oining faces of the split halves of the rings to hold them together. These rings are filled in between the ends of the chuck-head, asseen in the drawings, to support the die.

In heating our device, instead of making the shaft hollow and heating through it we make it solid and provide a gasolene or oil tank mounted-on the shaft above the chuckhead, having the outlet-pipe 15 entering the chuck-head. It has a valve 16, and also there is a valve 17 located in the oil-tank that can be removed to admit the oiljand extends down so as to close the exit into the pipe 15 when desired. The lower end of the chuckhead is hollowed out to provide the annular chamber 18, which receives the oil or gas from the pipe 15. WVhenthe pipe is subjected to heat after the operation is begun, the oil passing through it is convertedinto gas in the usual way known inoil-burners. The lower end of the chuck-head is provided with an upper face or partition 19, in which a series of suitable burners 20 are secured. Extending into the chuck-head is a series of inlet-pipes 21 to furnish air to mix with the gas or vapor as cut out of wood, the print of it made in the sand of the molds, and the die cast therein at slight expense in the simple well-known way, and it will be far cheaper than the way heretofore adopted of cutting the die inthe solid Ioo metal, and, furthermore, dies can be reproduced exactly. By providing the corrugations as shown we are enabled to bend the die into a curved form without injuring or cracking it. The thin die thus curved we are enabled to use by means of the adjustable chuckhead construction pointed out, and we can use a die of any width we may desire, being able to replace them quickly. lVith this method of making and mounting the die we are enabled to introduce the heat within the hollow chuck-head so that it will come into almost direct contact with the die, enabling it to be heated much quicker and kept heated at a much less expense than embossing-machines heretofore used as far as we are aware. lhe corrugations on the inside of the die after it is in position form grooves which extend vertically across the rings 10. These rings are not placed tightly together in the chuckhead but left preferably somewhat apart, so that the space between them cooperates wit-l1 the vertically-disposed grooves in the die and not only enables the heat to come in direct contact with the die, but brings about an equality in the distribution of the heat in its action on the die.

lVhat we claim as our invention, and desire to secure by Letters Patent, is-

1. In an embossing-machine, a cylindrical die with cross-corrugations throughout in its inner surface, a round hollow chuck-head or support for the die, and means within such chuck-head or support for heating the die.

2. In an embossing-machine, a die comprising a flat plate cast with the design on one side and cross-corrugations throughout the other side and then curved cylindrically with the corrugations inside, a round hollow chuckhead or cylindrical support for the die having openings in it, and means within the chuck-head or support for heating the die whereby it will be directly heated through such openings as well as through the chuckhead or support.

3. In an embossing machine, a suitable shaft, a chuck-head mounted on such shaft with its two ends separate, a die mounted 011 the chuck-head, a groove or stop on each end of the chu ck-head to prevent the lateral movement of the die thereon, divided rings to fill in between the ends of the chuck-head to centrally support the die, the opposing faces of the parts of such ring having a groove and dovetail therein to hold the parts together, and means for clamping the ends of the chuckhead against the die to hold it securely in place.

4. In an embossing machine, a suitable shaft, a hollow chuck-head mounted thereon with a chamber in the lower end, air-inlets in the chuck-head, burners Within the hollow chuck-head extending from the chamber in the lower end, an oil-tank mounted above the chuck-head on the shaft, a pipe leading therefrom to the chamber in the lower end of the chuck-head, and a die mounted on the chuck-head.

5. In an embossing machine, a suitable shaft, a hollow chuck-head mounted thereon with its two ends separate, a chamber in the lower end of the chuck-head, loosely-fitting rings located between the two ends of the chuck-head,a die mounted on such chuckhead provided interiorly with cross-grooves, means forholding the ends of the chuck-head, rings, and die in place, and means for introducing heat into such hollow chuck-head.

6. In an embossing machine, a suitable shaft, a hollow chuck-head mounted thereon with its two ends separate, a chamber in the lower end of the chuck-head, suitable airinlets into such chuck-head, suitable burners extending from the chamber in the lower end thereof, loosely-fitting rings located between the two ends of the chuck-head, a die mounted on such chuck-head provided interiorly with cross-grooves, means for holding the ends of the chuck-head, rings, and die in place, an oil-tank mounted above the chuck-head on the shaft, and a pipe leading therefrom to the chamber in the lower end of the chuck-head.

In witness whereof we have hereunto set our hands this 23d day of October, 1895.

THOMAS NESOM. \VILLIAM D. ECKENRODE.

lVitnesses:

V. H. LocKwoon, ZULA GREEN. 

